J. Chinese Trad. Patent Med. (Zhongchengyao), 29 (2), suppl. 1-3 (2007). TLC of taurine in Hedan pills on silica gel with 1) n-butanol - nitrile 20:1; and 2) chloroform - methanol 10:1. Detection 1) by spraying with 5 % vanillin in H2SO4 and heating at 105°C. Identification by fingerprint techniques.

Indian Drugs 44 (2), 117-121 (2007). HPTLC of rutine in methanolic extracts of powdered and dried Morus alba Linn. leaves, on silica gel with ethyl acetate - formic acid - glacial acetic acid - water 16:1:1:2. Detection and quantification of rutine by densitometric scanning at 254 nm. The method was validated for its precision. The accuracy of the method was checked by conducting recovery studies at three different levels of rutin and the average percentage recovery of rutin was found to be 96.9%. The proposed HPTLC method provided a good resolution of rutine from other constituents and can be used for quantitation of rutine present in the leaves of Morus alba Linn.

J. Planar Chromatogr. 20, 61-64 (2007). HPTLC of flavonoids (catechin, epicatechin, gallocatechin, catechin gallate as standards) on RP-18 with acetonitrile - water - formic acid 10:40:3. The best separation of catechin and epicatechin was achieved by multiple gradient development with increasing concentrations of acetonitrile (from 20 to 22%) in the water - formic acid mixture. UV detection at 282 and 500 nm (after derivatization with vanillin-phosphoric acid) for estimation of catechin content.

J. Planar Chromatogr. 20, 131-133 (2007). HPTLC of camptothecin (4-ethyl-4-hydroxy-1H-pyrano[3’,4’:6,7]indolizino[1,2b]quinoline-3,14(4H,12H)dione) on silica gel with toluene - acetonitrile - glacial acetic acid 65:35:1. Detection and quantitation were performed by densitometric scanning in fluorescence mode at 370 nm.

J. Sep. Sci. 30, 2092-2096 (2007). HPTLC of flavonoids in Bauhinia variegata, Bacopa monnieri, Centella asiatica, Ginkgo biloba, Lonicera japonica, Rosa bourboniana, Rosa brunonii, and Rosa damascena on RP-18 with two-fold development with water (5 % formic acid) – methanol 7:3 and water (5 % formic acid) – methanol 1:1 as mobile phases. Quantitative determination by absorbance measurement at 280 nm. The hRf values of apigenin (1), quercetin (2), rutin (3), luteolin (4), and quercitrin (5) were 19, 29, 34, 51, and 63, respectively. Linearity was between 150 and 800 ng/zone for (1) and (3) and between 200 and 1000 ng/zone for (2), (4) and (5). The limits of detection and quantification for (1) – (5) were 30 and 166 ng/zone, 40 and 200 ng/zone, 20 and 150 ng/zone, 40 and 200 ng/zone, and 40 and 200 ng/zone, respectively. Recovery was between 97 and 99.8% for (1) – (5).

59th Indian Pharmaceutical Congress F-83, 410, (2007). HPTLC of rabeprazole sodium and domperidone on silica gel with toluene - acetone - methanol 9:9:1. The hRf value of domperidone was 32 and of rabeprazole sodium 53. Densitometry at 285 nm. Lienarity was between 50 and 800 ng/zone for both compounds. The method was found suitable for routine analysis of formulations.

J. Planar Chromatogr. 20, 335-339 (2007). TLC of etoricoxib (rofecoxib as internal standard) on silica gel in a filter-paper-lined twin-trough chamber previously saturated with mobile phase vapor for 30 min with toluene - 1,4-dioxane - methanol 17:2:1. Densitometric analysis of etoricoxib was performed in absorbance mode at 235 nm. The limits of detection and quantitation were 30 and 100 ng/zone, respectively.

59th Indian Pharmaceutical Congress C-66, 240, (2007). Evaluation of Arjunakhseerpak and Arjunaristha, two ayurvedic formulations used for cardiovascular system, which contain Terminalia arjuna as the main ingredient. Simultaneous HPTLC of arjungenin and arjunolic acid from Terminalia arjuna on silica gel with toluene - ethyl acetate - acetic acid 10:10:1. Detection by spraying with 10 % sulphuric acid followed by heating. Densitometric evaluation at 366 nm. The UV spectra of the sandards arjungenin and arjunolic acid was found to be similar to that of arjungenin and arjunolic acid in the formulation. The method was found suitable for standardization of arjuna formulations.